/*
 * Copyright 2009 Original Author(s)
 * 
 * This file is part of Kommando
 * 
 * Kommando is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Kommando is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Kommando.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kommando.script;

import javax.script.ScriptEngine;
import javax.script.ScriptException;

import org.kommando.core.action.AbstractAction;
import org.kommando.core.action.ActionExecutionException;
import org.kommando.core.catalog.CatalogObject;
import org.kommando.core.catalog.TextObject;

/**
 * @author Peter De Bruycker
 */
public class RunAsScriptAction extends AbstractAction {

    private ScriptEngine engine;

    public RunAsScriptAction(ScriptEngine engine) {
        this.engine = engine;
    }

    @Override
    public CatalogObject execute(CatalogObject direct, CatalogObject indirect) throws ActionExecutionException {
        String script = direct.getExtension(String.class);

        try {
            Object value = engine.eval(script);
            if (value != null) {
                return new TextObject(value.toString());
            }
        } catch (ScriptException e) {
            // TODO handle exception
            e.printStackTrace();
        }

        return null;
    }

    @Override
    public Class<?>[] getDirectExtensionTypes() {
        return new Class<?>[] { String.class };
    }

    @Override
    public String getDescription() {
        return "Run the text as " + engine.getFactory().getLanguageName();
    }

    @Override
    public String getName() {
        return "Run as " + engine.getFactory().getLanguageName();
    }

    @Override
    public String getId() {
        return "script:" + engine.getFactory().getEngineName();
    }

}
